The Design of Chirp Source Based on AD9858

In this thesis,the present situation of the technology to generate chirp signal and the main characterisˉtics,the configuration method of AD9858and the high performance DDS chip,are briefly introduced.The hardˉware block figure is given to explain the work principle of this scheme.And then the control flow to output chirp signal is described in detail.Finally,the data of phase noise,harmony suppression and spur suppression gained by test are listed at the end of this thesis.